g.
The immunity of other equipment in which the equipment is to be used. The user must ensure that other
equipment used in the same placet is compatible. This may require additional protection measures;
h.
The time of day when welding or other activities are carried out
i.
The size of the area to be considered will depend on the structure of the building and any other
processes in the area. The surrounding area may extend beyond the boundaries of the buildings.
Recommendation to reduce electro-magnetic emission
a.
Mains power supply
: the equipment must be connected to the power mains as specified in the
Manufacturer’s instructions. If interference occurs, additional precautions suchas filtering of the mains
supply may be required. The supply cable in the welding machine’s permanent installations may have to
be screened in metal conduits or similar.The screening should be electrically continous for the entire
lengh of the cable. It should also beconnect to the welding machine with a good electrical contact
between the metal conduit and the casing.
b.
Welding cables:
The welding cables should be kept as short as possible and should be positioned close
together, running at or close to the floor level.
c.
Protection and reinforcement:
Selective screening and shielding of other cables and equipment in the
surrounding area may alleviate problems of interference. Screening of the entire welding area may be
considered for special applications
d.
Connect the earth directly to the metal piece to be welded
: Where necessary, the connection of
the workpiece to earth should be made by a direct connection to the workpiece, but in some countries
where direct connection is not permitted, the bonding should be achieved by suitable capacitance,
selected according to national regulations.
TROUBLESHOOTING
Anomalies
Causes
Remedies
The device does not deliver any
current and the yellow indicator
lamp of thermal defect
lights
up.
The welder thermal protection
has turned on.
Wait for the end of the cooling time,
around 2 minutes. The indicator
lamp
turns off.
The display is on but the device
does not deliver any current.
The cable of the earth clamp or
electrode holder is not connected
to the welder.
Check the connections.
If, when the unit is on and you
put your hand on the welding
unit’s body, you feel tingling
sensation.
The welding unit is not correctly
connected to the earth.
Check the plug and the earth of
your electrical network.
The display is on but the device
does not deliver any current.
The cable of the earth clamp or
electrode holder is not connected
to the welder.
Check the connections.
M
M
A
-T
IG
When starting up, the display
indicates
.
The voltage is not included in the
range 230V +/- 15%
Have the electrical installation
checked.
Use a tungsten electrode with the
adequate size
Default
coming
from
the
tungsten electrode
Use a well prepared tungsten
electrode
Instable arc
Too important gas flow rate
Reduce gas flow rate
Welding zone
Protect welding zone against air
flows
The tungsten electrode gets
oxidised and tern at the end of
welding.
Default coming from post-gas or
the gas has been stopped
prematurely.
Check
and
tighten
all
gas
connections. Wait until the electrode
cools down before stopping the gas.
T
IG
The electrode melts
Polarity error
Check that the earth clamp is really
connected to +
